[Gaz64]

I can see what's wrong.

The Centreforce pressure plate matches the flywheel you have.

The factory style pressure plate needs a stepped flywheel.

So what I'd do now is assemble the whole "Centreforce assembly, and assemble the correct flywheel with a factory clutch.

Then with each on a bench, measure the depth from the flywheel mounting flange to the tips of the PP fingers.